| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <chrono> |
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| 10 | |
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| 11 | // time_point |
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| 12 | |
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| 13 | // time_point& operator+=(const duration& d); |
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| 14 | // constexpr in c++17 |
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| 15 | |
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| 16 | #include <chrono> |
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| 17 | #include <cassert> |
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| 18 | |
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| 19 | #include "test_macros.h" |
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| 20 | |
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| 21 | #if TEST_STD_VER > 14 |
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| 22 | constexpr bool constexpr_test() |
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| 23 | { |
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| 24 | typedef std::chrono::system_clock Clock; |
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| 25 | typedef std::chrono::milliseconds Duration; |
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| 26 | std::chrono::time_point<Clock, Duration> t(Duration(5)); |
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| 27 | t += Duration(4); |
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| 28 | return t.time_since_epoch() == Duration(9); |
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| 29 | } |
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| 30 | #endif |
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| 31 | |
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| 32 | int main(int, char**) |
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| 33 | { |
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| 34 | { |
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| 35 | typedef std::chrono::system_clock Clock; |
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| 36 | typedef std::chrono::milliseconds Duration; |
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| 37 | std::chrono::time_point<Clock, Duration> t(Duration(3)); |
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| 38 | t += Duration(2); |
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| 39 | assert(t.time_since_epoch() == Duration(5)); |
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| 40 | } |
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| 41 | |
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| 42 | #if TEST_STD_VER > 14 |
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| 43 | static_assert(constexpr_test(), "" ); |
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| 44 | #endif |
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| 45 | |
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| 46 | return 0; |
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| 47 | } |
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| 48 | |
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